Question

which group of animals have double circulation? How is it related to their body temperature?

Answer 1

logy 

 Best Answer

This is a very good question. Double circulation refers to the complete separation of deoxygenated blood in the heart from oxygenated blood and it requires a 4-chambered heart. Warm blooded animals need a lot more oxygen going to their cells so that they can perform cellular respiration in order to produce ATP for the energy needed to keep their body temperatures up. That means they need an efficient circulatory system in which deoxygenated blood never mixes with oxygenated blood, which would dilute the blood's ability to carry enough oxygen to the cells. 
With a cold-blooded animal, 2 chambered or 3 chambered hearts are enough. The blood mixes, but these animals do not have to maintain warm body temperatures and so they do not need to produce nearly as much ATP as do warm-blooded animals so they get along with less oxygen being delivered to their cells. However, in all warm-blooded animals, it is imperative that the blood never mixes so as to get the maximum amount of oxygen to the body's cells for ATP production to maintain body heat. 
Therefore, the right side of the heart is completely separated from the left side of the heart by a thick wall. The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs to exchange CO2 for O2. This highly oxygenated blood is then returned to the heart on the left side, where it is pumped out to the body as pure oxygenated blood. 
The double circulation refers to the pulmonary circulation, or the blood from the right ventricle being sent to the lungs for oxygen, and the body circulation from the left ventricle sending blood out to the body. The two systems never mix, thus enabling a much more efficient way of delivering oxygenated blood only to body cells. 
Sometimes a baby is born with a hole in the wall separating the two sides of the heart and it must be corrected surgically early on or the child will suffer from fatigue and his brain and other organs will not get enough oxygen; it is very important to keep the pulmonary circulatory system and the systemic system separate to keep enough ATP production going in cellular respiration to support the metabolic level of the body which maintains warm temperatures. 
A warm-blooded animal requires more food as well because it needs more glucose to run cellular respiration to produce ATP. Cold-blooded animals can go much longer without food because their energy use is much lower, and again, this is why they can manage with 2 or 3 chambered hearts and the mixing of oxygenated and deoxygenated blood.

Answer 2

Hii dear here is your answer

Animals such as humans and birds have high energy needs as they need to maintain their body temperature. In such animals, double circulation is needed to purify blood and obtain maximum oxygen. Thus double circulation helps these animals to obtain greater energy to maintain their body temperature.

Hope it's help u